import React from 'react';
import { ComboBox } from 'rc-easyui';

class App extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      value: null,
      data: [],
      source: [
        { value: 11, text: "Mr. Nice" },
        { value: 12, text: "Narco" },
        { value: 13, text: "Bombasto" },
        { value: 14, text: "Celeritas" },
        { value: 15, text: "Magneta" },
        { value: 16, text: "RubberMan" },
        { value: 17, text: "Dynama" },
        { value: 18, text: "Dr IQ" },
        { value: 19, text: "Magma" },
        { value: 20, text: "Tornado" }
      ]
    }
  }
  handleFilterChange(event) {
    let q = event.filterValue || "";
    let data = this.state.source.filter(item => item.text.indexOf(q) !== -1);
    this.setState({ data: data })
  }
  render() {
    return (
      <div>
        <h2>Lazy Filtering</h2>
        <ComboBox
          placeholder="Searching..."
          lazy
          data={this.state.data}
          value={this.state.value}
          onChange={(value) => this.setState({ value: value })}
          onFilterChange={this.handleFilterChange.bind(this)}
        />
        <p>You selected: {this.state.value}</p>
      </div>
    );
  }
}

export default App;